<!DOCTYPE html>
<title>NDEFReadingEvent constructor</title>
<link rel="help" href="https://w3c.github.io/web-nfc/#dom-ndefreadingevent">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/nfc-helpers.js"></script>
<script>

  test(() => {
    assert_equals(NDEFReadingEvent.length, 2);
    assert_throws_js(TypeError, () => new NDEFReadingEvent('message'));
  }, 'NDEFReadingEvent constructor without init dict');

  test(() => {
    assert_throws_js(TypeError, () => new NDEFReadingEvent('type',
          {serialNumber: '', message: null}),
        'NDEFMessageInit#records is a required field.');
  }, 'NDEFReadingEvent constructor failed to construct its NDEFMessage');

  test(() => {
    const message = createMessage([createMimeRecordFromJson(test_buffer_data)]);
    const event = new NDEFReadingEvent('type', {serialNumber: null, message: message});
    assert_equals(event.serialNumber, '', 'serialNumber');
  }, 'NDEFReadingEvent constructor with null serialNumber');

  test(() => {
    const message = createMessage([createMimeRecordFromJson(test_buffer_data)]);
    const event = new NDEFReadingEvent('type', {message: message});
    assert_equals(event.serialNumber, '', 'serialNumber');
  }, 'NDEFReadingEvent constructor with serialNumber not present');

  test(() => {
    const message = createMessage([createMimeRecord(test_buffer_data)]);
    const event = new NDEFReadingEvent('type', {serialNumber: '', message: message});
    assert_equals(event.type, 'type', 'type');
    assert_equals(event.serialNumber, '', 'serialNumber');
    assertWebNDEFMessagesEqual(event.message, new NDEFMessage(message));
  }, 'NDEFReadingEvent constructor with valid parameters');

  test(() => {
    const record_init = createTextRecord(test_text_data);
    const event = new NDEFReadingEvent('type',
        {serialNumber: '', message: createMessage([record_init])});
    assert_equals(event.type, 'type', 'type');
    assert_equals(event.serialNumber, '', 'serialNumber');
    assert_equals(1, event.message.records.length, 'only 1 record');

    const record = new NDEFRecord(record_init);
    assert_equals(record.recordType, 'text', 'recordType');
    assert_equals(record.mediaType, null, 'mediaType');
    assert_equals(record.encoding, 'utf-8', 'encoding');
    assert_equals(record.lang, 'en', 'lang');

    assert_equals(event.message.records[0].recordType, 'text', 'recordType');
    assert_equals(event.message.records[0].mediaType, null, 'mediaType');
    assert_equals(event.message.records[0].encoding, 'utf-8', 'encoding');
    assert_equals(event.message.records[0].lang, null, 'lang is not set');
  }, 'NDEFReadingEvent constructor does not set NDEFRecord#lang for any text records it embeds');

</script>
